The
Stainless Steel Pipe has the advantages of high strength and high temperature resistance. What is more important is that the stainless
Steel Pipe is more tightly sealed and is not suitable for aging compared to non-stainless steel hoses. Based on these advantages, similar foreign instruments use stainless steel pipes. , However, because non-stainless steel hoses have the advantage of easy installation and the constraints of production technology of some domestic enterprises, most of the domestic manufacturers of surface area testers also use non-stainless steel hoses in terms of piping design. The application of this non-stainless steel hose leaves great potential for long-term stable operation of the instrument! After continuous efforts, Jinye Spectrum Technology took the lead to solve the problem that the domestic specific surface area tester could not realize the restriction of stainless steel pipelines. In addition, more innovations in specific surface area detection technology made our instrument testing more stable and greatly extended the instrument. The service life!
The total surface area occupied by 1 g of solids is the specific surface area (m2/g) of the material. Solids have a certain geometric shape, and their surface area can be obtained by the usual instruments and calculations. However, the determination of the surface area of powders or porous materials is difficult. They have not only an irregular outer surface but also a complex inner surface. The measurement of specific surface area has very important significance both in scientific research and industrial production. Porous materials with large specific surface area and high activity have strong adsorption capacity.
The BET specific surface area is an abbreviation of the BET surface area test method, and this method is named based on the well-known BET theory. BET is an acronym for three scientists (Brunauer, Emmett, and Teller). Based on the multi-layer adsorption formula derived from classical statistical theory, the famous BET equation has become the theoretical basis for particle surface adsorption science. , And is widely used in particle surface adsorption performance research and related detection instrument data processing.
The BET nitrogen adsorption method generally takes a long time, and it is recommended to use a fully automatic surface-specific testing instrument to reduce the test intensity while ensuring the accuracy. At present, similar foreign instruments are all automatic.
The specific surface area test must follow the relevant standards. The specific surface area test data is only true and reliable with the BET method. There are many instruments in China that can only perform the direct contrast method test and are now eliminated in China. At present, domestic and foreign specific surface area tests adopt the multi-point BET method. The specific surface area measurement standards developed at home and abroad are based on the BET test method. Please refer to our national standard (GB/T 19587-2004) - BET principle of gas adsorption. A method for determining the specific surface area of a solid material. The specific surface area measurement is actually a time-consuming task. Due to the difference in the adsorption capacity of the sample, the testing of some samples may take a full day. If the testing process is not fully automated, the tester can never leave and must High concentration, observing the instrument panel, and manipulating the knob, a little inattentiveness can lead to failure of the test process, which can waste a lot of valuable time for the testers. At present, there are several domestic manufacturers that produce specific surface area testers, among which Beijing Fahrenheit Technology Co., Ltd. F-Sorb 2400 surface area analyzer is an instrument that can truly realize the BET detection function (both with direct comparison method), and more importantly Beijing Jin Ai Spectrum Technology Co., Ltd. F-Sorb 2400 surface area analyzer is by far the only fully automated intelligent surface area detection equipment in China, its test results and international consistency is very high, the stability is also very good, while reducing human error, improve Test result accuracy.
